From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4A98FC433E6 for ; Fri, 12 Mar 2021 10:15:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1DFAF64FE2 for ; Fri, 12 Mar 2021 10:15:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233302AbhCLKOg (ORCPT ); Fri, 12 Mar 2021 05:14:36 -0500 Received: from mga06.intel.com ([134.134.136.31]:31201 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233156AbhCLKOb (ORCPT ); Fri, 12 Mar 2021 05:14:31 -0500 IronPort-SDR: V1VkNpR47gA61/s9PlyYmhCIKOnHONJPLBYHhnLihqo/sroHgAGEn01enOQIy7cANQKFZa6kzi 2RxTRsrXFIhQ== X-IronPort-AV: E=McAfee;i="6000,8403,9920"; a="250176852" X-IronPort-AV: E=Sophos;i="5.81,243,1610438400"; d="scan'208";a="250176852" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Mar 2021 02:14:27 -0800 IronPort-SDR: p3pc/NLd+Xqm94VoyweNd+YFu5lrYU14/wYaFZZ7h4PAB0GuN2m5yV6wLm49FTclipmvMl+Xky 1z3sUL3UQsnw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,243,1610438400"; d="scan'208";a="603884095" Received: from linux.intel.com ([10.54.29.200]) by fmsmga005.fm.intel.com with ESMTP; 12 Mar 2021 02:14:26 -0800 Received: from [10.213.16.227] (mtkaczyk-MOBL1.ger.corp.intel.com [10.213.16.227]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by linux.intel.com (Postfix) with ESMTPS id E097D580514; Fri, 12 Mar 2021 02:14:25 -0800 (PST) To: Jes Sorensen From: "Tkaczyk, Mariusz" Subject: IMSM regresion Cc: linux-raid Message-ID: Date: Fri, 12 Mar 2021 11:14:19 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-raid@vger.kernel.org Hello Jes, We discovered IMSM regression after last push in following scenario: #mdadm -CR imsm0 -e imsm -n4 /dev/nvme[0125]n1 #mdadm -CR volume -l0 --chunk 64 --raid-devices=1 /dev/nvme0n1 --force #mdadm -G /dev/md/imsm0 -n2 At the end of reshape, level doesn't back to RAID0. This is an information. We are working on fix. Please don't mark release candidate yet. Mariusz